3. The genetic code is commaless, which means that no codon is reserved for punctuations. It means that after one amino acid is coded, the second amino acid will be automatically, coded by the next three letters and that no letters are wasted as the punctuation marks (Fig.
Summer solstice is the first day of summer - it's usually between June 20th and June 23rd. In 2016, the summer solstice takes place on June 20th. We know it's summer because the earth's axis tilts toward the sun from June to September - this means warmer weather and longer days.
Summer and Winter Solstice. The summer solstice occurs once a year in December when the Sun's track across the Australian sky reaches its highest point. It is the day that has the most daylight hours of any in the year.The summer solstice usually occurs on 21 December, but can occur between 20 and 22 December.The winter solstice is the day of the year that has the least daylight hours of any in the year and usually occurs on 21 June but can occur between 20 and 22 June.s a result, the earliest sunrise occurs before the date of the summer solstice, and the latest sunset happens after the summer solstice. For the same reasons, around the winter solstice, the time of sunrise continues to get later in the days after the solstice.